This document contains a summary of written discourse analyses from various online platforms including Path, BBM, Facebook, WhatsApp. It analyzes conversations and posts in terms of gender, age, intentions of participants, linguistic aspects, and cultural differences. For example, it analyzes a Facebook post about a Japanese band and the varied responses from people of different ages and backgrounds. It also analyzes language use, punctuation, abbreviations in WhatsApp and BBM conversations between college students. The document demonstrates techniques for analyzing online written discourse.